Table 1

- Statistical results for comparison of demographic and clinical characteristics of patients among research groups.

Factors	Groups			P-values	Post-hoc P-values
Factors	IPACK (n=20)	Genicular (n=20)	Control (n=20)	P-values	Post-hoc P-values
Gender
Male	8 (40%)	9 (45%)	10 (50%)	0.817^{^a}	-
Female	12 (60%)	11 (55%)	10 (50%)	0.817^{^a}	-
ASA
1	2 (10%)	2 (10%)	3 (15%)	0.857^{^b}	-
2	5 (25%)	8 (40%)	6 (30%)
3	13 (65%)	10 (50%)	11 (55%)
Age	65.85±6.87	68.15±6.96	64.35±5.43	0.182^{^c}	-
Body mass index	30.5±2.03	31.95±2.48	31.45±2.8	0.176^{^c}	-
Surgical time (minutes)	60.9±4.34	59.55±4.14	61±3.53	0.450^{^c}	-
KSS score	44±3.98	48.9±5	69.45±10.33	<0.001^{^d}	1-2: 0.004
					1-3: <0.001
					2-3: <0.001
OKS score	23.05±3.8	26.35±5.66	49.15±6.06	<0.001^{^c}	1-2: 0.127
					1-3: <0.001
					2-3: <0.001
WOMAC score	38.4±5.92	41.4±4.74	69.95±7.48	<0.001^{^c}	1-2: 0.279
					1-3: <0.001
					2-3: <0.001

BMI: body mass index, KSS: Knee Society Clinical Rating System, OKS: Oxford Knee Score, WOMAC: Western Ontario, McMaster Universities osteoarthritis index, IPACK: interspace between the popliteal artery and the posterior

↵^a Chi square test with n (%).
↵^b Fisher exact test with n (%).
↵^c One way ANOVA followed by Tukey post-hoc test with mean±standard deviation (SD).
↵^d One way ANOVA followed by Games-Howel post-hoc test with mean±SD.